AttributeError: 'NoneType' object has no attribute 'time' paramiko

Question

import paramiko

key = paramiko.RSAKey.from_private_key_file("abc.pem")
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
print("connecting")
ssh.connect(hostname="1.1.1.1", username="abc", pkey=key)
print("connected")
commands = "ip a"
stdin, stdout, stderr = ssh.exec_command(commands)
print(stdout.read())
print(stderr.read())
print(stdin.read())
ssh.close()

Why have sometime will AttributeError: 'NoneType' object has no attribute 'time' in Python3.8 and sometime need wait long time show as result(or how can i see process)

Error code:

Exception ignored in: <function BufferedFile.__del__ at 0x108271ee0>
Traceback (most recent call last):
  File "/venv/lib/python3.8/site-packages/paramiko/file.py", line 66, in __del__
  File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 1392, in close
  File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 991, in shutdown_write
  File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 967, in shutdown
  File "/venv/lib/python3.8/site-packages/paramiko/transport.py", line 1846, in _send_user_message
AttributeError: 'NoneType' object has no attribute 'time'

Advance

how can i use paramiko double ssh

localhost >> a(server) ssh >> b

Exception ignored in: <function BufferedFile.__del__ at 0x10511fee0> File "/venv/lib/python3.8/site-packages/paramiko/file.py", line 66, in del File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 1392, in close File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 991, in shutdown_write File "/venv/lib/python3.8/site-packages/paramiko/channel.py", line 967, in shutdown File "/venv/lib/python3.8/site-packages/paramiko/transport.py", line 1846, in _send_user_message AttributeError: 'NoneType' object has no attribute 'time' — ForeverNews
– ForeverNews, Commented Feb 4, 2020 at 0:42
Please edit your question and add the traceback there, formatted as a code block. — Klaus D.
– Klaus D., Commented Feb 4, 2020 at 3:04
Looking at the code I'd recommend setting a timeout when you run your exec_command. Also I'd recommend running each command line by line in an interpreter to see which part exactly causes the exception - I'm curious as to whether it's during the read of stderr etc and a result of the buffer still being written to whilst you're trying read to it. All else fails, raise a bug report, since its 3.8 and the fact that you're seeing an Exception being ignored and the message in the trace you're getting means it's not caught by any meaningful exception class they provide. — 264nm
– 264nm, Commented Feb 4, 2020 at 9:23

Sanan Guliyev · Accepted Answer · 2021-12-10 14:20:36Z

29

Just close stdin

stdin, stdout, stderr = ssh.exec_command(commands)
stdin.close()

answered Dec 10, 2021 at 14:20

Sanan Guliyev

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Comments

NobodyNada · Accepted Answer · 2020-05-22 21:58:52Z

10

Maybe you can try something like this:

stdin, stdout, stderr = ssh.exec_command(commands)
time.sleep(5)

(don't forget to import time)

This seems to add more time to process the command

edited May 22, 2020 at 21:58

NobodyNada

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answered May 22, 2020 at 20:47

Jesus Briceño

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Comments

SMustapha · Accepted Answer · 2020-12-17 13:12:25Z

5

add the below:

if __name__ == "__main__":
    main()

then put your code in the main() def

answered Dec 17, 2020 at 13:12

SMustapha

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1 Comment

James Robert Albert Over a year ago

hm, not sure why, but this actually worked for me.

Andrei Brezan · Accepted Answer · 2020-06-24 12:13:13Z

1

It's the bug opened on https://github.com/paramiko/paramiko/issues/1617. As @NobodyNada said adding a time.sleep(5) is a workaround.

answered Jun 24, 2020 at 12:13

Andrei Brezan

111 bronze badge

Comments

Felipe Volpato · Accepted Answer · 2023-11-22 13:04:24Z

1

In my case the following line resolved the issue (put it on the top of the algorithm) :

import time

answered Nov 22, 2023 at 13:04

Felipe Volpato

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